ACAS 0612 - Precision
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Vishay Beyschlag
Precision Thin Film Chip Resistor Array
FEATURES
• Advanced thin film technology
• Two pairs or four equal resistor values
• Relative TCR down to ± 5 ppm/K (tracking)
• Relative tolerance down to ± 0.05 % (matching)
• Pure Sn termination on Ni barrier layer
The ACAS 0612 thin film chip resistor arrays combine the
proven reliability of precision thin film chip resistor products
with the advantages of chip resistor arrays. Defined relative
tolerance (matching) and relative TCR (tracking) make this
product perfectly suited for applications with outstanding
requirements towards stable fixed resistor ratios. A small
package enables the design of high density circuits in
combination with reduction of assembly costs. The ACAS is
available with equal or different resistor values.
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
• Precision analogue circuits
• Voltage divider
• Feedback circuits
• Signal conditioning
TECHNICAL SPECIFICATIONS
DESCRIPTION
EIA size
Metric size
Configuration, isolated
ACAS 0612
0612
RR1632M
4 x 0603
Design:
All equal
Two pairs
Resistance values
AE
TP
47  to 221 k (1)
Absolute tolerance
± 0.1 %
Relative tolerance
± 0.05 %
Absolute temperature coefficient
± 25 ppm/K; ± 15 ppm/K; ± 10 ppm/K
Relative temperature coefficient
± 15 ppm/K; ± 10 ppm/K; ± 5 ppm/K
Max. resistance ratio Rmin./Rmax.
1:5
Rated dissipation: P70
Element
0.1 W
Package, 4 x 0603
0.3 W
Operating voltage
75 V
Operating temperature range
- 55 °C to 125 °C
Permissible film temperature
125 °C (2)
Insulation voltage (Uins) against ambient and between
isolated resistors, continuous
75 V
Notes
• The relative figures of tolerance, TCR and drift are related to a medial axis between the maximum and minimum permissable deviation of
the resistor array. For detailed information please refer to the application note: Increasing Accuracy in Feedback Circuits and Voltage
Dividers with Thin Film Chip Resistor Arrays (www.vishay.com/doc?28194).
(1) Resistance values to be selected from E24; E192.
(2) For higher max. film temperature and AEC-Q200 qualification please refer to data sheet ACAS 0606 AT, ACAS 0612 AT - Precision available
on our web site at www.vishay.com/doc?28770.
Revision: 12-Apr-13
Document Number: 28751
1
For technical questions, contact: thinfilmarray@vishay.com
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ACAS 0612 - Precision
www.vishay.com
Vishay Beyschlag
APPLICATION INFORMATION
The power dissipation on the resistor generates a temperature rise against the local ambient, depending on the heat flow
support of the printed-circuit board (thermal resistance). The rated dissipation applies only if the permitted film temperature is
not exceeded. These resistors do not feature a limited lifetime when operated within the permissible limits.
MAXIMUM RESISTANCE CHANGE AT RATED POWER
(1)
DESCRIPTION
ACAS 0612
Configuration, isolated
4 x 0603
Operation mode
Precision
Standard
Rated power per element, P70
0.032 W
0.1 W
Rated power per packaging, P70
0.1 W
0.3 W
Film temperature
85 °C
125 °C
Operating voltage, Umax. AC/DC
25 V
75 V
1000 h
± 0.1 %
± 0.25 %
8000 h
± 0.25 %
± 0.5 %
1000 h
± 0.05 %
± 0.125 %
8000 h
± 0.125 %
± 0.25 %
Max. resistance change at P70
R/R max., after:
Max. relative resistance change (relative drift) at P70
R/R max., after:
Note
(1) Figures are given for arrays with equal values, design type AE.
CIRCUITS
R1
R2
R3
R4
ACAS 0612
DESIGN
ACAS 0612
AE
R1 = R2 = R3 = R4
TP
R1 = R4 < R2 = R3
Revision: 12-Apr-13
Document Number: 28751
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THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
ACAS 0612 - Precision
www.vishay.com
Vishay Beyschlag
PART NUMBER AND PRODUCT DESCRIPTION
Part Number: ACASA1100S2200P500
A
C
MODEL/
SIZE
ACA
A
S
A
1
1
0
0
S
2
2
0
0
P
5
0
0
TERMINAL
SIZE
RESISTANCE (1)
ACCURACY
GRADE (2)
RESISTANCE (1)
PACKAGING
SPECIAL
S = Convex
square
A = 0612
3 digit
resistance
value R1, R4
1 digit
multiplier
TCR, tracking,
tolerance and
matching
S, T, or U
3 digit
resistance
value R2, R3
1 digit multiplier
P1
P5
00 = Standard
MULTIPLIER
9 = *10-1
0 = *100
1 = *101
2 = *102
3 = *103
MULTIPLIER
9 = *10-1
0 = *100
1 = *101
2 = *102
3 = *103
Product Description: ACAS 0612 110R S 220R P5
ACA
S
0612
110R
S
220R
P5
MODEL/SIZE
TERMINAL
SIZE
RESISTANCE
R1, R4 (1)
ACCURACY
GRADE (2)
RESISTANCE
R2, R3 (1)
PACKAGING
ACA = Chip
array
S = Convex
square
0612
110R = 110 
1K1 = 1.1 k
22K1 = 22.1 k
TCR, tracking,
tolerance and
matching
S, T, or U
220R = 220 
1K1 = 1.1 k
22K1 = 22.1 k
P1
P5
Notes
• Products can be ordered using either the PART NUMBER or the PRODUCT DESCRIPTION.
(1) R = R  R = R .
1
4
2
3
(2) For historical temperature coefficient and resistance ranges please refer to the end of the data sheet.
TEMPERATURE COEFFICIENT AND RESISTANCE RANGE
TYPE
ACAS 0612
ABSOLUTE
RELATIVE
ACCURACY
GRADE
TCR
TOLERANCE
TCR
TOLERANCE
RESISTANCE
VALUE
S
± 25 ppm/K
± 0.1 %
± 15 ppm/K
± 0.05 %
47  to 221 k
T
± 15 ppm/K
± 0.1 %
± 10 ppm/K
± 0.05 %
47  to 150 k
U
± 10 ppm/K
± 0.1 %
± 5 ppm/K
± 0.05 %
47  to 100 k
Notes
• For historical temperature coefficent and resistance range please refer to the end of the data sheet.
• Relative TCR (tracking) down to ± 2.5 ppm/K on request.
• Relative tolerance for resistance values < 80  on request.
Revision: 12-Apr-13
Document Number: 28751
3
For technical questions, contact: thinfilmarray@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
ACAS 0612 - Precision
www.vishay.com
Vishay Beyschlag
PACKAGING
TYPE
CODE
QUANTITY
P1
1000
P5
5000
ACAS 0612
PACKAGING
STYLE
WIDTH
PITCH
REEL DIAMETER
Tape and reel
cardboard tape
acc. IEC 60286-3
Type I
8 mm
4 mm
180 mm/7"
DIMENSIONS
W
A
T2
L
T1
H
A1
A
DIMENSION AND MASS
TYPE
ACAS 0612
L
(mm)
W
(mm)
H
(mm)
P
(mm)
A1
(mm)
A
(mm)
T1
(mm)
T2
(mm)
MASS
(mg)
1.5 ± 0.15
3.2 ± 0.15
0.45 ± 0.1
0.8 ± 0.1
0.6 ± 0.1
0.4 ± 0.1
0.3 ± 0.15
0.4 ± 0.15
6.6
PATTERN STYLES FOR CHIP RESISTOR ARRAY
ACAS 0612
U
I
X
Y
G
P
Dimensions in mm
limits for solder resist
Z
0.1
RECOMMENDED SOLDER PAD DIMENSIONS
TYPE
ACAS 0612
Revision: 12-Apr-13
G
(mm)
Y
(mm)
X
(mm)
U
(mm)
Z
(mm)
I
(mm)
P
(mm)
0.7
0.7
0.64
0.5
2.1
0.3
0.8
Document Number: 28751
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ACAS 0612 - Precision
www.vishay.com
Vishay Beyschlag
DESCRIPTION
The production of the components is strictly controlled and
follows an extensive set of instructions established for
reproducibility. A homogeneous film of metal alloy is
deposited on a high grade (96 % Al2O3) ceramic substrate
using a mask to separate the adjacent resistors and
conditioned to achieve the desired temperature coefficient.
Specially designed inner contacts are realized on both
sides. A special laser is used to achieve the target value by
smoothly cutting a meander groove in the resistive layer
without damaging the ceramics.
The resistor elements are covered by a protective coating
designed for electrical, mechanical and climatic protection.
The terminations receive a final pure tin on nickel plating.
The result of the determined production is verified by an
extensive testing procedure and optical inspection
performed on 100 % of the individual chip resistors. Only
accepted products are laid directly into the paper tape in
accordance with IEC 60286-3 (3).
industry, including alcohols, esters and aqueous solutions.
The suitability of conformal coatings, if applied, shall be
qualified by appropriate means to ensure the long-term
stability of the whole system. The resistors are RoHS
compliant; the pure tin plating provides compatibility with
lead (Pb)-free and lead-containing soldering processes. The
permitted storage time is 20 years, whereas the solderability
is specified for 2 years after production or requalification.
The immunity of the plating against tin whisker growth has
been proven under extensive testing.
All products comply with the GADSL (1) and the
CEFIC-EECA-EICTA (2) list of legal restrictions on
hazardous substances. This includes full compliance with
the following directives:
• 2000/53/EC End of Life Vehicle Directive (ELV) and
Annex II (ELV II)
• 2011/65/EC Restriction of the use of Hazardous
Substances directive (RoHS)
• 2002/96/EC Waste Electrical and Electronic Equipment
Directive (WEEE)
ASSEMBLY
The resistors are suitable for processing on automatic
SMD assembly systems. They are suitable for automatic
soldering using reflow or vapour phase as shown in
IEC 61760-1 (3). The encapsulation is resistant to all
cleaning solvents commonly used in the electronics
TESTS
Where applicable, the resistors are tested in accordance
with EN 140401-801 which refers to EN 60115-1 and
EN 140400.
Notes
(1) Global Automotive Declarable Substance List, see www.gadsl.org.
(2) CEFIC (European Chemical Industry Council), EECA (European Electronic Component Manufacturers Association), EICTA (European trade
organisation representing the information and communications technology and consumer electronics), see www.eicta.org  policy 
environmental policy group  chemicals  jig  Joint Industry Guide (JIG-101 Ed 2.0).
(3) The quoted IEC standards are also released as EN standards with the same number and identical contents.
Rated Power in %
FUNCTIONAL PERFORMANCE
Standard Mode
Precision Mode
100
80
60
40
20
0
- 55
0
50
70
85
100
125
150
180
Ambient Temperature in °C
For permissible resistance change please refer to table MAXIMUM RESISTANCE CHANGE AT RATED POWER
Derating
Revision: 12-Apr-13
Document Number: 28751
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THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
ACAS 0612 - Precision
www.vishay.com
Vishay Beyschlag
TESTS AND REQUIREMENTS
Essentially all tests are carried out in accordance with the
following specifications:
category temperature; damp heat, long term, 56 days) is
valid (LCT = - 55 °C/UCT = 125 °C).
EN 60115-1, generic specification
Unless otherwise specified the following values apply:
EN 140400, sectional specification
Temperature: 15 °C to 35 °C
EN 140401-801, detail specification
Relative humidity: 45 % to 75 %
The testing also covers most of the requirements specified
by EIA/IS-703 and JIS-C-5202.
Air pressure: 86 kPa to 106 kPa (860 mbar to 1060 mbar)
The requirements stated in the “Test Procedures and
Requirements” table are based on the required tests and
permitted limits of EN 140401-801 where applicable.
The tests are carried out in accordance with IEC 60068 (1)
and under standard atmospheric conditions according to
IEC 60068-1 (1), 5.3. Climatic category LCT/UCT/56 (rated
temperature range: Lower category temperature, upper
TEST PROCEDURES AND REQUIREMENTS
EN
60 115-1
CLAUSE
IEC
60 068-2 (1)
TEST
METHOD
TEST
PROCEDURE
REQUIREMENTS
PERMISSIBLE CHANGE (2)
(R)
Stability for product types:
ACAS 0612
47  to 221 k
4.5
-
Resistance
-
± 0.1 % R
4.8.4.2
-
Temperature coefficient
At (20/-55/20) °C and
(20/125/20) °C
± 25 ppm/K; ± 15 ppm/K; ± 10 ppm/K
P 70 x R or U = Umax.;
1.5 h on; 0.5 h off;
whichever is the less severe;
U=
Endurance at 70 °C:
Precision operation mode
4.25.1
-
-
± (0.1 % R + 0.05 )
± (0.05 % R + 0.05 )
8000 h:
Absolute
Relative
± (0.25 % R + 0.05 )
± (0.125 % R + 0.05 )
P 70 x R or U = Umax.;
1.5 h on; 0.5 h off;
whichever is the less severe;
U=
Endurance at 70 °C:
Standard operation mode
4.25.3
1000 h:
Absolute
Relative
Endurance at upper
category temperature
1000 h:
Absolute
Relative
± (0.25 % R + 0.05 )
± (0.125 % R + 0.05 )
8000 h:
Absolute
Relative
± (0.5 % R + 0.05 )
± (0.25 % R + 0.05 )
85 °C; 1000 h:
Absolute
Relative
± (0.1 % R + 0.05 )
± (0.05 % R + 0.05 )
125 C; 1000 h:
Absolute
Relative
± (0.25 % R + 0.05 )
± (0.125 % R + 0.05 )
4.24
78 (Cab)
Damp heat,
steady state
(40 ± 2) °C; 56 days;
(93 ± 3) % RH
± (0.25 % R + 0.05)
4.13
-
Short time overload (3)
Standard operation mode
U = 2.5 x P 70 x R or
U = 2 x Umax.; 5 s
± (0.1 % R + 0.01 )
no visible damage
4.19
14 (Na)
Rapid change of
temperature
30 min at - 55 °C and
30 min at 125 °C;
5 cycles
± (0.1 % R + 0.01)
no visible damage
Revision: 12-Apr-13
Document Number: 28751
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THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
ACAS 0612 - Precision
www.vishay.com
Vishay Beyschlag
TEST PROCEDURES AND REQUIREMENTS
EN
60 115-1
CLAUSE
IEC
60 068-2 (1)
TEST
METHOD
TEST
REQUIREMENTS
PERMISSIBLE CHANGE (2)
(R)
PROCEDURE
Stability for product types:
47  to 221 k
ACAS 0612
4.18.2
58 (Td)
Resistance to soldering
heat
Reflow method 2
(IR/forced gas convection);
(260 ± 5) °C;
(10 ± 1) s
Solder bath method;
SnPb; non-activated flux
accelerated ageing 4 h/155 °C
(215 ± 3) °C; (3 ± 0.3) s
 (0.1 % R + 0.01 )
no visible damage
Good tinning ( 95 % covered);
no visible damage
4.17.2
58 (Td)
Solderability
4.32
21 (Ue3)
Shear (adhesion)
45 N
No visible damage
4.33
21 (Ue1)
Substrate bending
Depth 2 mm, 3 times
 (0.1 % R + 0.01 )
no visible damage;
no open circuit in bent position
4.7
-
Voltage proof
URMS = Uins
(60 ± 5) s; against ambient,
between adjacent resistors
No flashover or breakdown
Solder bath method;
SnAgCu; non-activated flux
accelerated ageing 4 h/155 °C
(235 ± 3) °C; (2 ± 0.2) s
Notes
(1) The quoted IEC standards are also released as EN standards with the same number and identical contents.
(2) Figures are given for arrays with equal values, design type AE.
(3) For a single element.
HISTORICAL TEMPERATURE COEFFICIENT AND RESISTANCE RANGES
DESCRIPTION
ACCURACY
GRADE
ABSOLUTE TCR
A
RESISTANCE VALUE
TCR TRACKING
ABSOLUTE
TOLERANCE
TOLERANCE
MATCHING
ACAS 0612
± 25 ppm/K
10 ppm/K
± 0.25 %
0.1 %
47  to 221 k
B
± 25 ppm/K
10 ppm/K
± 0.5 %
0.25 %
47  to 221 k
E
± 25 ppm/K
15 ppm/K
± 0.25 %
0.1 %
47  to 221 k
F
± 25 ppm/K
15 ppm/K
± 0.5 %
0.25 %
47  to 221 k
J
± 25 ppm/K
25 ppm/K
± 0.25 %
0.1 %
47  to 221 k
K
± 25 ppm/K
25 ppm/K
± 0.5 %
0.25 %
47  to 221 k
N
± 50 ppm/K
25 ppm/K
± 0.5 %
0.5 %
47  to 221 k
P
± 50 ppm/K
50 ppm/K
± 0.5 %
0.5 %
47  to 221 k
Note
• Special temperature coefficent and resistance combinations remain available. For optimized availability please refer to the table
TEMPERATURE COEFFICENT AND RESISTANCE.
Revision: 12-Apr-13
Document Number: 28751
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Legal Disclaimer Notice
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Disclaimer

ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
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“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
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Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
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statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a
particular product with the properties described in the product specification is suitable for use in a particular application.
Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over
time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
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Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk.
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Revision: 13-Jun-16
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Document Number: 91000